文献类型： 外文期刊

作者： Ding Jie ¹ ; Liu Danpu ¹ ; Wu Huari ² ;

作者机构： 1.Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Universal Wireless Commun, Beijing 100876, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing 100097, Peoples R China

关键词： energy efficiency;virtual MIMO;V-BLAST;cluster;wireless sensor networks

期刊名称：CHINA COMMUNICATIONS （ 影响因子：2.688； 五年影响因子：1.981 ）

ISSN： 1673-5447

年卷期： 2010 年 7 卷 5 期

页码：

收录情况： SCI

摘要： Wireless sensor network is becoming more and more popular in recent years, but energy-constrained characteristic of sensor nodes is one of the critical issues that we must consider in system design. In this paper, a cluster-based virtual V-BLAST transmission scheme is proposed to achieve energy savings for energy-constrained wireless sensor networks. In the proposed scheme, instead of using cluster member as cooperative nodes, multiple cluster heads cooperate to form virtual antenna array so that V-BLAST based virtual MIMO transmission can be implemented. Based on the communication energy consumption model, a way to optimize the parameters for the scheme is given. In addition, detailed simulation is performed to evaluate the performance of the proposed scheme for both densely and sparsely deployed sensor networks. Theoretical analysis and simulation results verify the energy efficiency of the proposed scheme.